Lepton 2.5 is 80x60, Lepton 3.5 is 160x120. https://www.flir.com/products/lepton/ https://www.flir.com/products/lepton/ Scroll down for full specifications.

Lepton 2.5 is 80x60, Lepton 3.5 is 160x120. https://www.flir.com/products/lepton/ https://www.flir.com/products/lepton/ Scroll down for full specifications. Key property is also thermal sensitivity, which for Lepton 3.5 is <50mK. Better sensitivity and you will be able to see finer gradients or need less temperature gradient to observe.